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Finding the Fourth Proportional to 125,620.80, 188,431.20 and 117,844.80

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Solution

The fourth proportional to 125,620.80, 188,431.20 and 117,844.80 is: 176,767.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,620.80 : 188,431.20 = 117,844.80 : x
  2. Step 2: Convert to fraction form
    125,620.80/188,431.20 = 117,844.80/x
  3. Step 3: Cross multiply
    125,620.80x = 188,431.20 × 117,844.80
  4. Step 4: Simplify right side
    125,620.80x = 22,205,637,077.76
  5. Step 5: Solve for x
    x = 22,205,637,077.76/125,620.80
  6. Step 6: Final answer
    x = 176,767.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.